ALPHA HYDROXY ACIDS (AHAs) AND ACNE
While retinol is a forerunner of Vitamin A, alpha hydroxy acids (AHAs) are derivatives from common everyday foods. Glycolic acid, the most commonly used AHA, is obtained from sugar, citric acids come from citrus fruits, and tartaric acids are derived from grapes. Lactic acid, on the other hand, is a milk derivative. Both retinols and AHAs are used as topical applications to hasten the growth of new skin cells and no adverse effect had been reported in their combined use.
Alpha hydroxy acids are sometimes referred to as “fruit acids” because they are most often obtained from fruits. Glycolic acid from sugar is the most commonly used AHA for facial treatments, followed by lactic and citric acid. As mentioned earlier, lactic acid is not obtained from fruit but is a milk derivative.
Less expensive over- the- counter acne treatments contain very low amount of alpha hydroxy acids. While retinols and AHAs were initially sold as mild skin exfoliants to reduce the signs of aging, they are now also being advertised as an effective way of fighting acne. No conclusive clinical test has been released yet to support their claim to treat acne.
المصدر : عرب مكس
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